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Mot de passe perdu? S'inscrire

26-12-2006 14:59

Jean Pierre Dechaume Jean Pierre Dechaume

Peut-il s'agir de Microglossum rufescens? Les spo

23-12-2006 19:25

Dmitry Gavryushin

Dec. 14, 2006, town park, Naro-Fominsk, Moscow reg

23-12-2006 19:21

Dmitry Gavryushin

Dec. 14, 2006, town park, Naro-Fominsk, Moscow reg

23-12-2006 19:12

Dmitry Gavryushin

Dec. 14, 2006, town park, Naro-Fominsk, Moscow reg

21-12-2006 18:40

Dmitry Gavryushin

Dec. 14, 2006, town park, Naro-Fominsk, Moscow reg

21-12-2006 18:36

Dmitry Gavryushin

Dec. 14, 2006, town park, Naro-Fominsk, Moscow reg

21-12-2006 18:32

Dmitry Gavryushin

Dec. 09, 2006, Naro-Fominsk, Moscow region, Russia

21-12-2006 18:26

Dmitry Gavryushin

Dec. 09, 2006, Naro-Fominsk, Moscow region, Russia

21-12-2006 18:23

Dmitry Gavryushin

Dec. 09, 2006, Naro-Fominsk, Moscow region, Russia

17-12-2006 21:02

Jean Pierre Dechaume Jean Pierre Dechaume

trouvé lle 17 12 2006, un "Geoglossum" à spore

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Microglossum
Jean Pierre Dechaume, 26-12-2006 14:59
Jean Pierre DechaumePeut-il s'agir de Microglossum rufescens?
Les spores sont de 12 à 15 ? x 4 ?. Paraphyses minces, à peine épaissies au sommet.
Trouvé dans une prairie en compagnie de Thuemenidium atropurpureum et de
Geoglossum barlae
  • message #1204
Hans-Otto Baral, 27-12-2006 19:53
Hans-Otto Baral
Re:Microglossum
Microglossum is a very difficult genus. Such brownish fruitbodies are very interesting and possibly rather rare. I have once seen a collection sent by JP Priou which had such a colour and contrary to M. olivaceum the asci were without croziers (see my DVD).

In what medium did you prepare the spores, lactophenol? The characteristic oil drops are completely invisible. Please use water as medium for ascomycetes in the future.
Jean Pierre Dechaume, 27-12-2006 22:18
Jean Pierre Dechaume
Re:Microglossum
erreur de manipulation, je remets la photo en bas
  • message #1212
Hans-Otto Baral, 28-12-2006 18:28
Hans-Otto Baral
Re:Microglossum
The crucial question is the absence or presence of croziers which is only clearly seen if the asci are not detached. I would very much like to see this collection in fresh state. From 1. January I will be at home again. If it is still fresh or you are able to collect it again, here is my address:

Hans-Otto Baral
Blaihofstr. 42, D-72074 Tübingen
Jean Pierre Dechaume, 28-12-2006 22:49
Jean Pierre Dechaume
Re:Microglossum
Merci de votre réponse rapide, mais il fait très froid ( -8-10° la nuit) chez moi, et je ne pourrai pas retrouver de microglossum en bon état. Ils sont gelés.
Pouvez-vous me dire ce que sont les " croziers", je ne connais pas ce mot? merci.
Hans-Otto Baral, 29-12-2006 18:36
Hans-Otto Baral
Re:Microglossum
Croziers are the same as clamps in Basidiomycetes, at the base of the asci rep. basidia. This feature is not easy to see if unexperienced, but it is an unequivocal character. If you have dried your specimen, you must make a squash mount of a small piece of hymenium in KOH and search for unbroken asci, to see if the ascus base has one or two septa.

In any case I would like to send you my DVD (if you don´t have it) on which you can find quite many images of Microglossum. Pleas etell me your address.
Jean Pierre Dechaume, 29-12-2006 20:58
Jean Pierre Dechaume
Re:Microglossum
Thank you very mutch.
Je vais faire traduire votre réponse très précisément, et je vais essayer de mieux étudier.
Je n'ai pas retrouvé de microglosse aujourd'hui. J'ai trouvé seulement de vieux geoglossum,
fallax peut-être.
J'accepte avec plaisir votre DVD que je ne connais pas.
mon adresse:
Jean Pierre DECHAUME
Senavelle
71990 LA GRANDE VERRIÈRE France
Merci de votre amabilité, je m'en souviendrai.
Eugene Popov, 13-01-2007 13:19
two green Microglossums
Dear colleagues,
I need your help in determination of two clearly different species of green-colored Microglossums.
The first one collected on Isl. Gogland (Gulf of Finland, Russia) in black alder forest among hepatics just near a small spring, 08.08.2006. Fruitbodies up to 3 cm high, olivaceous green with bluish hue at the stipe base. Sterile and fertile parts are sharply demarcated. Stipe finely squamulose.
Asci clavate, 100-110(-120) x 7-9 mkm, without crozier, with LG+ apical ring (purplish, soon becoming dark blue to nearly black). Ascospores (14,5-)17-20 x 4,5 mkm, subfusiform, curved, non septate, with several (usually 4) large lipid bodies.
  • message #1272
Eugene Popov, 13-01-2007 13:35
two green Microglossums 2
The second species was collected in Pskov region, Russia, in Calamagrostis epigeios stand, 14.09.2006.
Fruitbodies 5-8 cm high, 0,5-0,7 cm broad, clavate or cylindric, green to bluish green. Stipe concolorous with fertile part or more olivaceous, absolutely smooth. The border between stipe and hymenium not so obvious as in previous species.
Asci clavate, 80-85(-100) x (6,5-)7,5-8,5 mkm, with crozier, with LG+ apical ring (blue). Ascospores ellipsoid to subfusoid, curved or not, 10-14(-15) x 3,5-4 mkm, with 2-4 large lipid bodies.
This species do not fit the concept of M. viride as accepted in available for me literature, but I do not know any other green colored Microglossum.
  • message #1273